
The undetermined parameter \(\upsilon _1\)  can in principal be determined
from the results for untwisted bundles;
in [1]}, [2]} the constant \(\upsilon _1\)  is
evaluated by a direct computation of the Reidemeister
torsion. However, in the present case we are not able to determine
a priori the value
of \(\upsilon _1\) , so we cannot make a more
concrete prediction for the symplectic volume at this stage.

